Waltee e



(ModeL) W. E. DOTY.

CHAIN PUMP BUCKET.

No} 247,622. Patented Sept. 27,1881.

UNITED STATES PATENT OFFICE.

WALTER E. DOTY, OF LOOKPORT, NEW YORK.

CHAIN-PUMP BUCKET.

SPECIFICATION forming part of Letters Patent No. 247,622, dated September 27, 1881.

Application filed February 28, 1881. (ModeL) To all whom it may concern:

Be it known that I, WALTER E. DOTY, of Lockport, of Niagara county, in the State of New York, have invented new and useful Im-' "of adisk or disks of vulcanite secured between two shackles of metal; and it consists, first, in a soft-rubber cushion interposed between the bucket-disk ot' harder vulcanite and its support; second, in the manner of attracting and loekingtogether the parts of the iron shackles.

That others may fully understand the inverttion, I will particularly describe it, having reference to the accompanying drawings, wherein Figure lrepresents,in perspective, plan, and section, the several pieces detached. Fig. 2 is a vertical section, showing the several parts assembled. Fig. 3 is a horizontal section of the upper part of the shackle. Fig. 4 is a vertical section of the same.

The shackle is in two parts, A B. The part A has an eye, a, at one end, a flange-plate, c, at its middle, and a T or-cross head, d, at its other end. The stem or shaft holds the vulcanite disks, while the cross-head d enters the part B and clamps said disks between the flange c and the partB. The part B has a concave or hollow conical flange, b, and a loop, (2. At the center of said flange there is an elliptical opening, 9, adapted to receive the crosshead at, and on opposite side of the same are inclined ways it, terminating at top with notches t.

When the cross-head is inserted in the opening 9 and the two parts rotated in opposite directions the ends of the cross-head engage on ,the ways It, and are forced to travel up there, thereby drawing the parts together until they slip into the notches t, and when the elastic bucket-disks are in place the parts cannot be disengaged without an exertion of force equal to that which forced them into lock.

The principal bucket-disk H is simply a disk of Vulcanite, and may be cut from sheets of that material; or, if preferred, it may be molded. Disks or buttons of vulcanite have been heretofore employed forpump-buckets,but generally with the rigidity so great that too much power is required to force them into shape.

By my invention I overcome and obviate this dit'flculty by placing between the disk H and its support, on one side, a cushion, I, of soft elastic rubber, which will yield with sufficient ease to permit the parts to be secured, and still present suflicient resistance to hold them securely locked, and to force the disk H into form.

I prefer to place between the cushion l and the flange c a button of vulcanite, J; but this may be dispensed with, if desired, the stem of A being made shorter to correspond, or the buttons I and J may be molded in a single piece.

The advantages of this shackle are, besides cheapness and efficiency, the very material one ofeaseof disconnection and reconnection without risk of twisting the chain.

Havingdescribed my invention, what I claim as new is-- l. A chain-pump bucket composed of a metallic shackle in two parts, combined with a vulcanite disk, H, and a soft-rubber cushion interposed on one side between said disk and its support, for the purpose set forth.

2. A chain-pump bucket composed of a metallic shackle in two parts, one of them having a concave or hollow conical flange, I), combined with a vulcanite disk, H, a soft-rubber cushion, l, and a vulcanite button,J, substantially as described.

8. A shackle for a chain-pump bucket, composed of the part A, provided with loop a at one end, flange c at the middle, and cross-head d at the other end, combined with the part B, provided with the hollow conical or concave flange 1), opening g, inclines h, notches i, and loop 0, and the vulcanite disks, substantially as set forth.

WALTER E. DOIY.

Witnesses:

J. W. Dory, MAMIE E. Do'rY. 

